External System not Connected
01-05-10, 09:52 AM
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External System not Connected
Just bought an 04 Lexus Ls 430 and the navigation system sometimes tells me that the external system not connected and the a/c controls don't function and the screen goes black for a couple of minutes and sometimes it works fine. Can somebody please tell me what i should do before i get charge couple of thousand $$? thank you in advance.
01-05-10, 06:02 PM
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01-05-10, 06:15 PM
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Yes, you are wright the only thing i tried was disconnecting the sockets from the navigation system located in the trunk but there was no solution, the wierd part is that sometimes if i turn off the engine and turn it back on it works again, i don't know if you have any other suggestions? thank you in advance.
01-06-10, 09:24 PM
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04-08-10, 01:47 PM
#8
Well it was raining today here in Ohio and I grabbed the umbrella from the backseat. Unfortunately I forgot to close the rear door all the way, so when I came out to my car today the battery was dead enough it wouldn't start.
Got a jump from a guy at work, and after I let her run for a while I got the dreaded "External System is not available".
Shut the car off for a while, restarted it, same thing. Symptoms: No Audio, NAV, HVAC controls, bluetooth, etc.
Got it home, checked all the fuses, still nothing.
*THE FIX THAT WORKED FOR ME*
Disconnected the positive battery terminal for about 5 minutes.
Reconnected it, and everything came back!
Got a jump from a guy at work, and after I let her run for a while I got the dreaded "External System is not available".
Shut the car off for a while, restarted it, same thing. Symptoms: No Audio, NAV, HVAC controls, bluetooth, etc.
Got it home, checked all the fuses, still nothing.
*THE FIX THAT WORKED FOR ME*
Disconnected the positive battery terminal for about 5 minutes.
Reconnected it, and everything came back!
04-08-10, 02:20 PM
#9
my Toyota Sienna has a nav system (JBL factory) that would do something similar. I learned that one of the fuses had a poor connection. I replaced all the radio/nav fuses and it works fine without interruption now. It's not expensive to try this fix too.
05-02-20, 09:32 PM
#10
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Just bought an 04 Lexus Ls 430 and the navigation system sometimes tells me that the external system not connected and the a/c controls don't function and the screen goes black for a couple of minutes and sometimes it works fine. Can somebody please tell me what i should do before i get charge couple of thousand $$? thank you in advance.
Did anyone figure out a solution? My 2004 does that every now and then. Seems to happen when I drive at highway speeds for a while
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djs123
LS - 3rd Gen (2001-2006)
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02-08-10 09:33 AM
